MaterialGroup.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / System / Windows / Media3D / Generated / MaterialGroup.cs / 1 / MaterialGroup.cs

                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// This file was generated, please do not edit it directly. 
// 
// Please see http://wiki/default.aspx/Microsoft.Projects.Avalon/MilCodeGen.html for more information.
// 
//---------------------------------------------------------------------------

using MS.Internal;
using MS.Internal.Collections; 
using MS.Internal.PresentationCore;
using MS.Utility; 
using System; 
using System.Collections;
using System.Collections.Generic; 
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Globalization; 
using System.Reflection;
using System.Runtime.InteropServices; 
using System.Text; 
using System.Windows.Markup;
using System.Windows.Media.Media3D.Converters; 
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Composition;
using System.Security; 
using System.Security.Permissions;
using SR=MS.Internal.PresentationCore.SR; 
using SRID=MS.Internal.PresentationCore.SRID; 
using System.Windows.Media.Imaging;
// These types are aliased to match the unamanaged names used in interop 
using BOOL = System.UInt32;
using WORD = System.UInt16;
using Float = System.Single;
 
namespace System.Windows.Media.Media3D
{ 
 

 
    sealed partial class MaterialGroup : Material
    {
        //-----------------------------------------------------
        // 
        //  Public Methods
        // 
        //----------------------------------------------------- 

        #region Public Methods 

        /// 
        ///     Shadows inherited Clone() with a strongly typed
        ///     version for convenience. 
        /// 
        public new MaterialGroup Clone() 
        { 
            return (MaterialGroup)base.Clone();
        } 

        /// 
        ///     Shadows inherited CloneCurrentValue() with a strongly typed
        ///     version for convenience. 
        /// 
        public new MaterialGroup CloneCurrentValue() 
        { 
            return (MaterialGroup)base.CloneCurrentValue();
        } 



 
        #endregion Public Methods
 
        //------------------------------------------------------ 
        //
        //  Public Properties 
        //
        //-----------------------------------------------------

        private static void ChildrenPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 
        {
 
 

 
            // The first change to the default value of a mutable collection property (e.g. GeometryGroup.Children)
            // will promote the property value from a default value to a local value. This is technically a sub-property
            // change because the collection was changed and not a new collection set (GeometryGroup.Children.
            // Add versus GeometryGroup.Children = myNewChildrenCollection). However, we never marshalled 
            // the default value to the compositor. If the property changes from a default value, the new local value
            // needs to be marshalled to the compositor. We detect this scenario with the second condition 
            // e.OldValueSource != e.NewValueSource. Specifically in this scenario the OldValueSource will be 
            // Default and the NewValueSource will be Local.
            if (e.IsASubPropertyChange && 
               (e.OldValueSource == e.NewValueSource))
            {
                return;
            } 

 
            MaterialGroup target = ((MaterialGroup) d); 

 
            // If this is both non-null and mutable, we need to unhook the Changed event.
            MaterialCollection oldCollection = null;
            MaterialCollection newCollection = null;
 
            if ((e.OldValueSource != BaseValueSourceInternal.Default) || e.IsOldValueModified)
            { 
                oldCollection = (MaterialCollection) e.OldValue; 
                if ((oldCollection != null) && !oldCollection.IsFrozen)
                { 
                    oldCollection.ItemRemoved -= target.ChildrenItemRemoved;
                    oldCollection.ItemInserted -= target.ChildrenItemInserted;
                }
            } 

            // If this is both non-null and mutable, we need to hook the Changed event. 
            if ((e.NewValueSource != BaseValueSourceInternal.Default) || e.IsNewValueModified) 
            {
                newCollection = (MaterialCollection) e.NewValue; 
                if ((newCollection != null) && !newCollection.IsFrozen)
                {
                    newCollection.ItemInserted += target.ChildrenItemInserted;
                    newCollection.ItemRemoved += target.ChildrenItemRemoved; 
                }
            } 
            if (oldCollection != newCollection && target.Dispatcher != null) 
            {
                using (CompositionEngineLock.Acquire()) 
                {
                    DUCE.IResource targetResource = (DUCE.IResource)target;
                    int channelCount = targetResource.GetChannelCount();
 
                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++)
                    { 
                        DUCE.Channel channel = targetResource.GetChannel(channelIndex); 
                        Debug.Assert(!channel.IsOutOfBandChannel);
                        Debug.Assert(!targetResource.GetHandle(channel).IsNull); 
                        // resource shouldn't be null because
                        // 1) If the field is one of our collections, we don't allow null elements
                        // 2) Codegen already made sure the collection contains DUCE.IResources
                        // ... so we'll Assert it 

                        if (newCollection != null) 
                        { 
                            int count = newCollection.Count;
                            for (int i = 0; i < count; i++) 
                            {
                                DUCE.IResource resource = newCollection.Internal_GetItem(i) as DUCE.IResource;
                                Debug.Assert(resource != null);
                                resource.AddRefOnChannel(channel); 
                            }
                        } 
 
                        if (oldCollection != null)
                        { 
                            int count = oldCollection.Count;
                            for (int i = 0; i < count; i++)
                            {
                                DUCE.IResource resource = oldCollection.Internal_GetItem(i) as DUCE.IResource; 
                                Debug.Assert(resource != null);
                                resource.ReleaseOnChannel(channel); 
                            } 
                        }
                    } 
                }
            }
            target.PropertyChanged(ChildrenProperty);
        } 

 
        #region Public Properties 

        ///  
        ///     Children - MaterialCollection.  Default value is new FreezableDefaultValueFactory(MaterialCollection.Empty).
        /// 
        public MaterialCollection Children
        { 
            get
            { 
                return (MaterialCollection) GetValue(ChildrenProperty); 
            }
            set 
            {
                SetValueInternal(ChildrenProperty, value);
            }
        } 

        #endregion Public Properties 
 
        //------------------------------------------------------
        // 
        //  Protected Methods
        //
        //------------------------------------------------------
 
        #region Protected Methods
 
        ///  
        /// Implementation of Freezable.CreateInstanceCore.
        ///  
        /// The new Freezable.
        protected override Freezable CreateInstanceCore()
        {
            return new MaterialGroup(); 
        }
 
 

        #endregion ProtectedMethods 

        //-----------------------------------------------------
        //
        //  Internal Methods 
        //
        //------------------------------------------------------ 
 
        #region Internal Methods
 
        /// 
        ///     Critical: This code calls into an unsafe code block
        ///     TreatAsSafe: This code does not return any critical data.It is ok to expose
        ///     Channels are safe to call into and do not go cross domain and cross process 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal override void UpdateResource(DUCE.Channel channel, bool skipOnChannelCheck) 
        {
            // If we're told we can skip the channel check, then we must be on channel 
            Debug.Assert(!skipOnChannelCheck || _duceResource.IsOnChannel(channel));

            if (skipOnChannelCheck || _duceResource.IsOnChannel(channel))
            { 
                base.UpdateResource(channel, skipOnChannelCheck);
 
                // Read values of properties into local variables 
                MaterialCollection vChildren = Children;
 
                // Store the count of this resource's contained collections in local variables.
                int ChildrenCount = (vChildren == null) ? 0 : vChildren.Count;

                // Pack & send command packet 
                DUCE.MILCMD_MATERIALGROUP data;
                unsafe 
                { 
                    data.Type = MILCMD.MilCmdMaterialGroup;
                    data.Handle = _duceResource.GetHandle(channel); 
                    data.ChildrenSize = (uint)(sizeof(DUCE.ResourceHandle) * ChildrenCount);

                    channel.BeginCommand(
                        (byte*)&data, 
                        sizeof(DUCE.MILCMD_MATERIALGROUP),
                        (int)(data.ChildrenSize) 
                        ); 

 
                    // Copy this collection's elements (or their handles) to reserved data
                    for(int i = 0; i < ChildrenCount; i++)
                    {
                        DUCE.ResourceHandle resource = ((DUCE.IResource)vChildren.Internal_GetItem(i)).GetHandle(channel);; 
                        channel.AppendCommandData(
                            (byte*)&resource, 
                            sizeof(DUCE.ResourceHandle) 
                            );
                    } 

                    channel.EndCommand();
                }
            } 
        }
        internal override DUCE.ResourceHandle AddRefOnChannelCore(DUCE.Channel channel) 
        { 

                if (_duceResource.CreateOrAddRefOnChannel(channel, System.Windows.Media.Composition.DUCE.ResourceType.TYPE_MATERIALGROUP)) 
                {


                    MaterialCollection vChildren = Children; 

                    if (vChildren != null) 
                    { 
                        int count = vChildren.Count;
                        for (int i = 0; i < count; i++) 
                        {
                            ((DUCE.IResource) vChildren.Internal_GetItem(i)).AddRefOnChannel(channel);
                        }
                    } 
                    AddRefOnChannelAnimations(channel);
 
 
                    UpdateResource(channel, true /* skip "on channel" check - we already know that we're on channel */ );
                } 

                return _duceResource.GetHandle(channel);

        } 
        internal override void ReleaseOnChannelCore(DUCE.Channel channel)
        { 
 
                Debug.Assert(_duceResource.IsOnChannel(channel));
 
                if (_duceResource.ReleaseOnChannel(channel))
                {

 
                    MaterialCollection vChildren = Children;
 
                    if (vChildren != null) 
                    {
                        int count = vChildren.Count; 
                        for (int i = 0; i < count; i++)
                        {
                            ((DUCE.IResource) vChildren.Internal_GetItem(i)).ReleaseOnChannel(channel);
                        } 
                    }
                    ReleaseOnChannelAnimations(channel); 
 
                }
 
        }
        internal override DUCE.ResourceHandle GetHandleCore(DUCE.Channel channel)
        {
            // Note that we are in a lock here already. 
            return _duceResource.GetHandle(channel);
        } 
        internal override int GetChannelCountCore() 
        {
            // must already be in composition lock here 
            return _duceResource.GetChannelCount();
        }
        internal override DUCE.Channel GetChannelCore(int index)
        { 
            // Note that we are in a lock here already.
            return _duceResource.GetChannel(index); 
        } 

        private void ChildrenItemInserted(object sender, object item) 
        {
            if (this.Dispatcher != null)
            {
                DUCE.IResource thisResource = (DUCE.IResource)this; 
                using (CompositionEngineLock.Acquire())
                { 
                    int channelCount = thisResource.GetChannelCount(); 

                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++) 
                    {
                        DUCE.Channel channel = thisResource.GetChannel(channelIndex);
                        Debug.Assert(!channel.IsOutOfBandChannel);
                        Debug.Assert(!thisResource.GetHandle(channel).IsNull); 

                        // We're on a channel, which means our dependents are also on the channel. 
                        DUCE.IResource addResource = item as DUCE.IResource; 
                        if (addResource != null)
                        { 
                            addResource.AddRefOnChannel(channel);
                        }

                        UpdateResource(channel, true /* skip on channel check */); 
                    }
                } 
            } 
        }
 
        private void ChildrenItemRemoved(object sender, object item)
        {
            if (this.Dispatcher != null)
            { 
                DUCE.IResource thisResource = (DUCE.IResource)this;
                using (CompositionEngineLock.Acquire()) 
                { 
                    int channelCount = thisResource.GetChannelCount();
 
                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++)
                    {
                        DUCE.Channel channel = thisResource.GetChannel(channelIndex);
                        Debug.Assert(!channel.IsOutOfBandChannel); 
                        Debug.Assert(!thisResource.GetHandle(channel).IsNull);
 
                        UpdateResource(channel, true /* is on channel check */); 

                        // We're on a channel, which means our dependents are also on the channel. 
                        DUCE.IResource releaseResource = item as DUCE.IResource;
                        if (releaseResource != null)
                        {
                            releaseResource.ReleaseOnChannel(channel); 
                        }
                    } 
                } 
            }
        } 

        #endregion Internal Methods

        //----------------------------------------------------- 
        //
        //  Internal Properties 
        // 
        //-----------------------------------------------------
 
        #region Internal Properties

        //
        //  This property finds the correct initial size for the _effectiveValues store on the 
        //  current DependencyObject as a performance optimization
        // 
        //  This includes: 
        //    Children
        // 
        internal override int EffectiveValuesInitialSize
        {
            get
            { 
                return 1;
            } 
        } 

 

        #endregion Internal Properties

        //----------------------------------------------------- 
        //
        //  Dependency Properties 
        // 
        //------------------------------------------------------
 
        #region Dependency Properties

        /// 
        ///     The DependencyProperty for the MaterialGroup.Children property. 
        /// 
        public static readonly DependencyProperty ChildrenProperty; 
 
        #endregion Dependency Properties
 
        //-----------------------------------------------------
        //
        //  Internal Fields
        // 
        //------------------------------------------------------
 
        #region Internal Fields 

 

        internal System.Windows.Media.Composition.DUCE.MultiChannelResource _duceResource = new System.Windows.Media.Composition.DUCE.MultiChannelResource();

        internal static MaterialCollection s_Children = MaterialCollection.Empty; 

        #endregion Internal Fields 
 

 
        #region Constructors

        //------------------------------------------------------
        // 
        //  Constructors
        // 
        //----------------------------------------------------- 

        static MaterialGroup() 
        {
            // We check our static default fields which are of type Freezable
            // to make sure that they are not mutable, otherwise we will throw
            // if these get touched by more than one thread in the lifetime 
            // of your app.  (Windows OS Bug #947272)
            // 
            Debug.Assert(s_Children == null || s_Children.IsFrozen, 
                "Detected context bound default value MaterialGroup.s_Children (See OS Bug #947272).");
 

            // Initializations
            Type typeofThis = typeof(MaterialGroup);
            ChildrenProperty = 
                  RegisterProperty("Children",
                                   typeof(MaterialCollection), 
                                   typeofThis, 
                                   new FreezableDefaultValueFactory(MaterialCollection.Empty),
                                   new PropertyChangedCallback(ChildrenPropertyChanged), 
                                   null,
                                   /* isIndependentlyAnimated  = */ false,
                                   /* coerceValueCallback */ null);
        } 

 
 
        #endregion Constructors
 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// This file was generated, please do not edit it directly. 
// 
// Please see http://wiki/default.aspx/Microsoft.Projects.Avalon/MilCodeGen.html for more information.
// 
//---------------------------------------------------------------------------

using MS.Internal;
using MS.Internal.Collections; 
using MS.Internal.PresentationCore;
using MS.Utility; 
using System; 
using System.Collections;
using System.Collections.Generic; 
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Diagnostics;
using System.Globalization; 
using System.Reflection;
using System.Runtime.InteropServices; 
using System.Text; 
using System.Windows.Markup;
using System.Windows.Media.Media3D.Converters; 
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Composition;
using System.Security; 
using System.Security.Permissions;
using SR=MS.Internal.PresentationCore.SR; 
using SRID=MS.Internal.PresentationCore.SRID; 
using System.Windows.Media.Imaging;
// These types are aliased to match the unamanaged names used in interop 
using BOOL = System.UInt32;
using WORD = System.UInt16;
using Float = System.Single;
 
namespace System.Windows.Media.Media3D
{ 
 

 
    sealed partial class MaterialGroup : Material
    {
        //-----------------------------------------------------
        // 
        //  Public Methods
        // 
        //----------------------------------------------------- 

        #region Public Methods 

        /// 
        ///     Shadows inherited Clone() with a strongly typed
        ///     version for convenience. 
        /// 
        public new MaterialGroup Clone() 
        { 
            return (MaterialGroup)base.Clone();
        } 

        /// 
        ///     Shadows inherited CloneCurrentValue() with a strongly typed
        ///     version for convenience. 
        /// 
        public new MaterialGroup CloneCurrentValue() 
        { 
            return (MaterialGroup)base.CloneCurrentValue();
        } 



 
        #endregion Public Methods
 
        //------------------------------------------------------ 
        //
        //  Public Properties 
        //
        //-----------------------------------------------------

        private static void ChildrenPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 
        {
 
 

 
            // The first change to the default value of a mutable collection property (e.g. GeometryGroup.Children)
            // will promote the property value from a default value to a local value. This is technically a sub-property
            // change because the collection was changed and not a new collection set (GeometryGroup.Children.
            // Add versus GeometryGroup.Children = myNewChildrenCollection). However, we never marshalled 
            // the default value to the compositor. If the property changes from a default value, the new local value
            // needs to be marshalled to the compositor. We detect this scenario with the second condition 
            // e.OldValueSource != e.NewValueSource. Specifically in this scenario the OldValueSource will be 
            // Default and the NewValueSource will be Local.
            if (e.IsASubPropertyChange && 
               (e.OldValueSource == e.NewValueSource))
            {
                return;
            } 

 
            MaterialGroup target = ((MaterialGroup) d); 

 
            // If this is both non-null and mutable, we need to unhook the Changed event.
            MaterialCollection oldCollection = null;
            MaterialCollection newCollection = null;
 
            if ((e.OldValueSource != BaseValueSourceInternal.Default) || e.IsOldValueModified)
            { 
                oldCollection = (MaterialCollection) e.OldValue; 
                if ((oldCollection != null) && !oldCollection.IsFrozen)
                { 
                    oldCollection.ItemRemoved -= target.ChildrenItemRemoved;
                    oldCollection.ItemInserted -= target.ChildrenItemInserted;
                }
            } 

            // If this is both non-null and mutable, we need to hook the Changed event. 
            if ((e.NewValueSource != BaseValueSourceInternal.Default) || e.IsNewValueModified) 
            {
                newCollection = (MaterialCollection) e.NewValue; 
                if ((newCollection != null) && !newCollection.IsFrozen)
                {
                    newCollection.ItemInserted += target.ChildrenItemInserted;
                    newCollection.ItemRemoved += target.ChildrenItemRemoved; 
                }
            } 
            if (oldCollection != newCollection && target.Dispatcher != null) 
            {
                using (CompositionEngineLock.Acquire()) 
                {
                    DUCE.IResource targetResource = (DUCE.IResource)target;
                    int channelCount = targetResource.GetChannelCount();
 
                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++)
                    { 
                        DUCE.Channel channel = targetResource.GetChannel(channelIndex); 
                        Debug.Assert(!channel.IsOutOfBandChannel);
                        Debug.Assert(!targetResource.GetHandle(channel).IsNull); 
                        // resource shouldn't be null because
                        // 1) If the field is one of our collections, we don't allow null elements
                        // 2) Codegen already made sure the collection contains DUCE.IResources
                        // ... so we'll Assert it 

                        if (newCollection != null) 
                        { 
                            int count = newCollection.Count;
                            for (int i = 0; i < count; i++) 
                            {
                                DUCE.IResource resource = newCollection.Internal_GetItem(i) as DUCE.IResource;
                                Debug.Assert(resource != null);
                                resource.AddRefOnChannel(channel); 
                            }
                        } 
 
                        if (oldCollection != null)
                        { 
                            int count = oldCollection.Count;
                            for (int i = 0; i < count; i++)
                            {
                                DUCE.IResource resource = oldCollection.Internal_GetItem(i) as DUCE.IResource; 
                                Debug.Assert(resource != null);
                                resource.ReleaseOnChannel(channel); 
                            } 
                        }
                    } 
                }
            }
            target.PropertyChanged(ChildrenProperty);
        } 

 
        #region Public Properties 

        ///  
        ///     Children - MaterialCollection.  Default value is new FreezableDefaultValueFactory(MaterialCollection.Empty).
        /// 
        public MaterialCollection Children
        { 
            get
            { 
                return (MaterialCollection) GetValue(ChildrenProperty); 
            }
            set 
            {
                SetValueInternal(ChildrenProperty, value);
            }
        } 

        #endregion Public Properties 
 
        //------------------------------------------------------
        // 
        //  Protected Methods
        //
        //------------------------------------------------------
 
        #region Protected Methods
 
        ///  
        /// Implementation of Freezable.CreateInstanceCore.
        ///  
        /// The new Freezable.
        protected override Freezable CreateInstanceCore()
        {
            return new MaterialGroup(); 
        }
 
 

        #endregion ProtectedMethods 

        //-----------------------------------------------------
        //
        //  Internal Methods 
        //
        //------------------------------------------------------ 
 
        #region Internal Methods
 
        /// 
        ///     Critical: This code calls into an unsafe code block
        ///     TreatAsSafe: This code does not return any critical data.It is ok to expose
        ///     Channels are safe to call into and do not go cross domain and cross process 
        /// 
        [SecurityCritical,SecurityTreatAsSafe] 
        internal override void UpdateResource(DUCE.Channel channel, bool skipOnChannelCheck) 
        {
            // If we're told we can skip the channel check, then we must be on channel 
            Debug.Assert(!skipOnChannelCheck || _duceResource.IsOnChannel(channel));

            if (skipOnChannelCheck || _duceResource.IsOnChannel(channel))
            { 
                base.UpdateResource(channel, skipOnChannelCheck);
 
                // Read values of properties into local variables 
                MaterialCollection vChildren = Children;
 
                // Store the count of this resource's contained collections in local variables.
                int ChildrenCount = (vChildren == null) ? 0 : vChildren.Count;

                // Pack & send command packet 
                DUCE.MILCMD_MATERIALGROUP data;
                unsafe 
                { 
                    data.Type = MILCMD.MilCmdMaterialGroup;
                    data.Handle = _duceResource.GetHandle(channel); 
                    data.ChildrenSize = (uint)(sizeof(DUCE.ResourceHandle) * ChildrenCount);

                    channel.BeginCommand(
                        (byte*)&data, 
                        sizeof(DUCE.MILCMD_MATERIALGROUP),
                        (int)(data.ChildrenSize) 
                        ); 

 
                    // Copy this collection's elements (or their handles) to reserved data
                    for(int i = 0; i < ChildrenCount; i++)
                    {
                        DUCE.ResourceHandle resource = ((DUCE.IResource)vChildren.Internal_GetItem(i)).GetHandle(channel);; 
                        channel.AppendCommandData(
                            (byte*)&resource, 
                            sizeof(DUCE.ResourceHandle) 
                            );
                    } 

                    channel.EndCommand();
                }
            } 
        }
        internal override DUCE.ResourceHandle AddRefOnChannelCore(DUCE.Channel channel) 
        { 

                if (_duceResource.CreateOrAddRefOnChannel(channel, System.Windows.Media.Composition.DUCE.ResourceType.TYPE_MATERIALGROUP)) 
                {


                    MaterialCollection vChildren = Children; 

                    if (vChildren != null) 
                    { 
                        int count = vChildren.Count;
                        for (int i = 0; i < count; i++) 
                        {
                            ((DUCE.IResource) vChildren.Internal_GetItem(i)).AddRefOnChannel(channel);
                        }
                    } 
                    AddRefOnChannelAnimations(channel);
 
 
                    UpdateResource(channel, true /* skip "on channel" check - we already know that we're on channel */ );
                } 

                return _duceResource.GetHandle(channel);

        } 
        internal override void ReleaseOnChannelCore(DUCE.Channel channel)
        { 
 
                Debug.Assert(_duceResource.IsOnChannel(channel));
 
                if (_duceResource.ReleaseOnChannel(channel))
                {

 
                    MaterialCollection vChildren = Children;
 
                    if (vChildren != null) 
                    {
                        int count = vChildren.Count; 
                        for (int i = 0; i < count; i++)
                        {
                            ((DUCE.IResource) vChildren.Internal_GetItem(i)).ReleaseOnChannel(channel);
                        } 
                    }
                    ReleaseOnChannelAnimations(channel); 
 
                }
 
        }
        internal override DUCE.ResourceHandle GetHandleCore(DUCE.Channel channel)
        {
            // Note that we are in a lock here already. 
            return _duceResource.GetHandle(channel);
        } 
        internal override int GetChannelCountCore() 
        {
            // must already be in composition lock here 
            return _duceResource.GetChannelCount();
        }
        internal override DUCE.Channel GetChannelCore(int index)
        { 
            // Note that we are in a lock here already.
            return _duceResource.GetChannel(index); 
        } 

        private void ChildrenItemInserted(object sender, object item) 
        {
            if (this.Dispatcher != null)
            {
                DUCE.IResource thisResource = (DUCE.IResource)this; 
                using (CompositionEngineLock.Acquire())
                { 
                    int channelCount = thisResource.GetChannelCount(); 

                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++) 
                    {
                        DUCE.Channel channel = thisResource.GetChannel(channelIndex);
                        Debug.Assert(!channel.IsOutOfBandChannel);
                        Debug.Assert(!thisResource.GetHandle(channel).IsNull); 

                        // We're on a channel, which means our dependents are also on the channel. 
                        DUCE.IResource addResource = item as DUCE.IResource; 
                        if (addResource != null)
                        { 
                            addResource.AddRefOnChannel(channel);
                        }

                        UpdateResource(channel, true /* skip on channel check */); 
                    }
                } 
            } 
        }
 
        private void ChildrenItemRemoved(object sender, object item)
        {
            if (this.Dispatcher != null)
            { 
                DUCE.IResource thisResource = (DUCE.IResource)this;
                using (CompositionEngineLock.Acquire()) 
                { 
                    int channelCount = thisResource.GetChannelCount();
 
                    for (int channelIndex = 0; channelIndex < channelCount; channelIndex++)
                    {
                        DUCE.Channel channel = thisResource.GetChannel(channelIndex);
                        Debug.Assert(!channel.IsOutOfBandChannel); 
                        Debug.Assert(!thisResource.GetHandle(channel).IsNull);
 
                        UpdateResource(channel, true /* is on channel check */); 

                        // We're on a channel, which means our dependents are also on the channel. 
                        DUCE.IResource releaseResource = item as DUCE.IResource;
                        if (releaseResource != null)
                        {
                            releaseResource.ReleaseOnChannel(channel); 
                        }
                    } 
                } 
            }
        } 

        #endregion Internal Methods

        //----------------------------------------------------- 
        //
        //  Internal Properties 
        // 
        //-----------------------------------------------------
 
        #region Internal Properties

        //
        //  This property finds the correct initial size for the _effectiveValues store on the 
        //  current DependencyObject as a performance optimization
        // 
        //  This includes: 
        //    Children
        // 
        internal override int EffectiveValuesInitialSize
        {
            get
            { 
                return 1;
            } 
        } 

 

        #endregion Internal Properties

        //----------------------------------------------------- 
        //
        //  Dependency Properties 
        // 
        //------------------------------------------------------
 
        #region Dependency Properties

        /// 
        ///     The DependencyProperty for the MaterialGroup.Children property. 
        /// 
        public static readonly DependencyProperty ChildrenProperty; 
 
        #endregion Dependency Properties
 
        //-----------------------------------------------------
        //
        //  Internal Fields
        // 
        //------------------------------------------------------
 
        #region Internal Fields 

 

        internal System.Windows.Media.Composition.DUCE.MultiChannelResource _duceResource = new System.Windows.Media.Composition.DUCE.MultiChannelResource();

        internal static MaterialCollection s_Children = MaterialCollection.Empty; 

        #endregion Internal Fields 
 

 
        #region Constructors

        //------------------------------------------------------
        // 
        //  Constructors
        // 
        //----------------------------------------------------- 

        static MaterialGroup() 
        {
            // We check our static default fields which are of type Freezable
            // to make sure that they are not mutable, otherwise we will throw
            // if these get touched by more than one thread in the lifetime 
            // of your app.  (Windows OS Bug #947272)
            // 
            Debug.Assert(s_Children == null || s_Children.IsFrozen, 
                "Detected context bound default value MaterialGroup.s_Children (See OS Bug #947272).");
 

            // Initializations
            Type typeofThis = typeof(MaterialGroup);
            ChildrenProperty = 
                  RegisterProperty("Children",
                                   typeof(MaterialCollection), 
                                   typeofThis, 
                                   new FreezableDefaultValueFactory(MaterialCollection.Empty),
                                   new PropertyChangedCallback(ChildrenPropertyChanged), 
                                   null,
                                   /* isIndependentlyAnimated  = */ false,
                                   /* coerceValueCallback */ null);
        } 

 
 
        #endregion Constructors
 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
                        

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK